(n) "State" means the District of Columbia and any State of the United States within the boundaries of which a portion of the Interstate System is located.

(o) "State law" means a State constitutional provision or statute, or an ordinance, rule, or regulation enacted or adopted by a State agency or political subdivision of a State pursuant to State constitution or statute.

(p) "Trade name" shall include brand name, trademark, distinctive symbol, or other similar device or thing used to identify particular products or services.

(q) "Traveled way" means the portion of a roadway for the movement of vehicles, exclusive of shoulders.

(r) "Turning roadway" means a connecting roadway for traffic turning between two intersection legs of an interchange.

(s) "Visible" means capable of being seen (whether or not legible) without visual aid by a person of normal visual acuity. § 20.3 Measurements of distance

(a) Distance from the edge of a right-of-way shall be measured horizontally along a line normal or perpendicular to the centerline of the highway.

(b) All distances under § 20.7 (a) (2) and (b) shall be measured along the centerline of the highway between two vertical planes which are normal or perpendicular to and intersect the centerline of the highway, and which pass through the termini of the measured distance.

§20.4 Signs that may not be permitted in protected areas Erection or maintenance of the following signs may not be permitted in protected areas:

(a) Signs advertising activities that are illegal under State or Federal laws or regulations in effect at the location of such signs or at the location of such activities,

and

(b) Obsolete signs,

(c) Signs that are not clean and in good repair,

(d) Signs that are not securely affixed to a substantial structure,

(e) Signs that are not consistent with the standards in this part.

820.5 Signs that may be permitted in protected areas

(a) Erection or maintenance of the following signs may be permitted in protected areas:

Class 1-Official signs. Directional or other official signs or notices erected and maintained by public officers or agencies pursuant to and in accordance with direction or authorization contained in State or Federal law, for the purpose of carrying out an official duty or responsibility.

Class 2-On premise signs. Signs not prohibited by State law which are consistent with the applicable provisions of this section and § 20.8 and which advertise the sale or lease of, or activities being conducted upon, the real property where the signs are located.

Not more than one such sign advertising the sale or lease of the same property may be permitted under this Class in such manner as to be visible to traffic proceeding in any one direction on any one Interstate highway. Not more than one such sign, visible to traffic proceeding in any one direction on any one Interstate highway and advertising activities being conducted upon the real property where the sign is located, may be permitted under this Class more than 50 feet from the advertised activity.

Class 3--Signs within 12 miles of advertised activities. Signs not prohibited by State law which are consistent with the applicable provisions of this section and §§ 20.6, 20.7 and 20.8 and which advertise activities being conducted within 12 air miles of such signs.

Class 4-Signs in the specific interest of the traveling public. Signs authorized to be erected or maintained by State law which are consistent with the applicable provisions of this section and §§ 20.6, 20.7 and 20.8 and which are designed to give information in the specific interest of the traveling public.

(b) A Class 2 or 3 sign, except a Class 2 sign not more than 50 feet from the advertised activity, that displays any trade name which refers to or identifies any service rendered or product sold, used or otherwise handled more than 12 air miles from such sign may not be permitted unless the name of the advertised activity which is within 12 air miles of such sign is displayed as conspicuously as such trade name.

(c) Only information about public places operated by Federal, State or local governments, natural phenomena, historic sites, areas of natural scenic beauty or naturally suited for outdoor recreation, and places for camping, lodging, eating and vehicle service and repair is deemed to be in the specific interest of the traveling public. For the purposes of the standards in this part, a trade name is deemed to be information in the specific interest of the traveling public only if it identifies or characterizes such a place or indentifies vehicle service, equipment, parts, accessories, fuels, oils or lubricants being offered for sale at such a place. Signs displaying any other trade name may not be permitted under Class 4.

(d) Notwithstanding the provisions of paragraph (b) of this section, Class 2 or Class 3 signs which also qualify as Class 4 signs may display trade names in accordance with the provisions of paragraph (c) of this section.

§ 20.6 Class 3 and 4 signs within informational sites

(a) Informational sites for the erection and maintenance of Class 3 and 4 advertising and informational signs may be established in accordance with the Regulations for the Administration of Federal-Aid for Highways. The location and frequency of such sites shall be as determined by agreements between the Secretary of Commerce and the State highway departments.

(b) Class 3 and 4 signs may be permitted within such informational sites in protected areas in a manner consistent with the following provisions:

(1) No sign may be permitted which is not placed upon a panel.

(2) No panel may be permitted to exceed 13 feet in height or 25 feet in length, including boarder and trim, but excluding supports.

(3) No sign may be permitted to exceed 12 square feet in area, and nothing on such sign may be permitted to be legible from any place on the main-traveled way or a turning roadway.

(4) Not more than one sign concerning a single activity or place may be permitted within any one informational site.

(5) Signs concerning a single activity or place may be permitted within more than one informational site, but no Class 3

sign which does not also qualify as a Class 4 sign may be permitted within any informational site more than 12 air miles from the advertised activity.

(6) No sign may be permitted which moves or has any animated or moving parts.

(7) Illumination of panels by other than white lights may not be permitted, and no sign placed on any panel may be permitted to contain, include, or be illuminated by any other lights, or any flashing, intermittent, or moving lights.

(8) No lighting may be permitted to be used in any way in connection with any panel unless it is so effectively shielded as to prevent beams or rays of light from being directed at any portion of the main-traveled way of the Interstate System, or is of such low intensity or brilliance as not to cause glare or to impair the vision of the driver of any motor vehicle, or to otherwise interfere with any driver's operation of a motor vehicle. § 20.7 Class 3 and 4 signs outside informational sites

(a) The erection or maintenance of the following signs may be permitted within protected areas, outside informational sites: (1) Class 3 signs which are visible only to Interstate highway traffic not served by an informational site within 12 air miles of the advertised activity;

(2) Class 4 signs which are more than 12 miles from the nearest panel within an informational site serving Interstate highway traffic to which such signs are visible.

(3) Signs that qualify both as Class 3 and 4 signs may be permitted in accordance with either subparagraph (1) or (2) of this paragraph.

(b) The erection or maintenance of signs permitted under paragraph (a) of this section may not be permitted in any manner inconsistent with the following:

(1) In protected areas in advance of an intersection of the main-traveled way of an Interstate highway and an exit roadway, such signs visible to Interstate highway traffic approaching such intersection may not be permitted to exceed the following number:

The specified distances shall be measured to the nearest point of the intersection of the traveled way of the exit roadway and the main-traveled way of the Interstate highway.

(2) Subject to the other provisions of this paragraph, not more than two such signs may be permitted within any mile distance measured from any point, and no such signs may be permitted to be less than 1,000 feet apart.

(3) Such signs may not be permitted in protected areas adjacent to any Interstate highway right-of-way upon any part of the width of which is constructed an entrance or exit roadway.

(4) Such signs visible to Interstate highway traffic which is approaching or has passed an entrance roadway may not be permitted in protected areas for 1,000 feet beyond the furthest point of the intersection between the traveled way of such entrance roadway and the main-traveled way of the Interstate highway.

(5) No such signs may be permitted in scenic areas.

(6) Not more than one such sign advertising activities being conducted as a single enterprise or giving information about a single place may be permitted to be erected or maintained in such manner as to be visible to traffic moving in any one direction on any one Interstate highway.

(c) No Class 3 or 4 signs other than those permitted by this section may be permitted to be erected or maintained within protected areas, outside informational sites.

§ 20.8 General provisions

No Class 3 or 4 sign may be permitted to be erected or maintained pursuant to § 20.7, and no Class 2 sign may be permitted to be erected or maintained, in any manner inconsistent with the following:

(a) No sign may be permitted which attempts or appears to attempt to direct the movement of traffic or which interferes with, imitates or resembles any official traffic sign, signal or device.

(b) No sign may be permitted which prevents the driver of a vehicle from having a clear and unobstructed view of official signs and approaching or merging traffic.

(c) No sign may be permitted which contains, includes, or is illuminated by any flashing, intermittent or moving light or lights.

(d) No lighting may be permitted to be used in any way in connection with any sign unless it is so effectively shielded as to prevent beams or rays of light from being directed at any portion of the main-traveled way of the Interstate System, or is of such low intensity or brilliance as not to cause glare or to impair the vision of the driver of any motor vehicle, or to otherwise interfere with any driver's operation of a motor vehicle.

(e) No sign may be permitted which moves or has any animated or moving parts.

(f) No sign may be permitted to be erected or maintained upon trees or painted or drawn upon rocks or other natural features.

(g) No sign may be permitted to exceed 20 feet in length, width or height, or 150 square feet in area, including border and trim but excluding supports, except Class 2 signs not more than 50 feet from, and advertising activities being conducted upon, the real property where the sign is located.

$20.9 Exclusions.

The standards in this part shall not apply to markers, signs and plaques in appreciation of sites of historical significance for the erection of which provisions are made in an agreement between a State and the Secretary of Commerce, as provided in the Act, unless such agreement expressly makes all or any part of the standards applicable.

2 Effective date March 26, 1960.

$20.10 State regulations.

A State may elect to prohibit signs permissible under the standards in this part without forfeiting its rights to any benefits provided for in the act.

Dated: November 10, 1958.

Recommended:

Issued:

B. D. TALLAMY,

Federal Highway Administrator.

SINCLAIR WEEKS,

Secretary of Commerce.

[F.R. Doc. 58-9440; Filed, Nov. 10, 1958; 12:43 p.m.]